TWM450038U - Audio/video apparatus for canceling echo - Google Patents

Description

Audio and video equipment to eliminate echo

This creation relates to an audio-visual device, and in particular to an audio-visual device for eliminating echo.

With the development of technology, television is no longer used as a one-way transmission of information. Today's TV has gradually evolved toward the trend of installing audio and video capture devices. That is to say, a television equipped with an audio-visual capture device has begun to have a two-way communication function through the network.

However, in the process of using the television and the video and audio capture device for two-way communication, the processing of the echo becomes a major problem to be solved today. In the existing solution, such as: Skype is a software design to achieve the effect of eliminating echo. However, this way of eliminating echo by software design not only requires a lot of research and development costs, but also is not suitable for other transmission software (such as: QQ).

Therefore, the creator feels that the above-mentioned deficiency can be improved. He is devoted to research and cooperates with the application of theory, and finally proposes a creation that is reasonable in design and effective in improving the above-mentioned deficiency.

The purpose of the present embodiment is to provide an audio-visual device for eliminating echoes, which is designed to eliminate echo between the video capture device and the video playback device through a hardware design.

Another object of the present embodiment is to provide a single transmission cable or a transmission cable module of a dual transmission cable.

The present invention provides an audio-visual device for eliminating echo, comprising: a video capture device having a video capture device for capturing video data, an audio capture device for capturing audio data, a signal processing module and an output port, the video capture device and the audio capture device are electrically connected to the signal processing module, and the signal processing module is electrically connected to the output port; The device has an image display, a sound player, and an input port, and the image display and the sound player are respectively coupled to the input port; and a transmission cable module, the opposite ends of which are respectively An output port of the video capture device and an input port of the video playback device, and the transmission cable module has a video line group for transmitting video data and a channel for transmitting audio data and adapted to cancel echo The audio line group has a transmission line for transmitting power, a pair of transmission lines for transmitting differential signals, and a transmission line for grounding, the audio line group includes one Providing bit clock for audio data transmission lines, with a switch that provides left and right channel audio data transmission line clock, a serial input audio data for a transmission line, and for outputting a serial audio data transmission line.

Preferably, the signal processing module has a digital processor and an encoder electrically connected to each other. The digital processor is electrically connected to the video capture device, and the encoder is electrically connected to the audio capture device. And the digital processor and the encoder are coupled to the output port.

Preferably, the output port has an integrated output socket, the input port has an integrated input socket, and the transmission cable module has an integrated transmission cable, the integrated transmission cable includes the video line group and the audio a wire set, and two ends of the integrated transmission cable are respectively inserted into the integrated output socket and the integrated input socket.

Preferably, the output port has a video output socket and an audio output socket. The input port has a video input socket and an input audio socket. The transmission cable module has a video transmission cable and an audio transmission cable. The video cable has a video transmission cable and an audio transmission cable. The transmission cable includes the video cable group, and two ends of the video transmission cable are respectively inserted into the video output socket and the video input socket, the audio transmission cable includes the audio line group, and both ends of the audio transmission cable Plug into the audio output socket and the audio input socket respectively.

In summary, the audio-visual equipment for eliminating echoes provided by the present embodiment provides a bit clock for the audio data and a clock for inputting the left and right channel audio data through the audio line group of the transmission cable module. Serial audio data, and output serial audio data, to achieve the effect of eliminating echo.

Furthermore, the transmission cable module can be designed as a single integrated transmission cable or two types of video transmission cables and audio transmission cables according to the designer's needs.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and explanation, and are not intended to limit the scope of the present invention. .

Referring to FIG. 1 , the present invention provides an audio-visual device 100 for eliminating echo, which includes an audio-visual capture device 1 , a video playback device 2 , and a video capture device 1 and a video playback device 2 . Transmission cable module 3.

The video capture device 1 can be used to capture video data and sound. After the video data and the audio data captured by the video capture device 1 are transmitted to the video playback device 2 via the transmission cable module 3, the effect of effectively eliminating the echo can be achieved.

The following is an example of the audio-visual device 100 proposed by the present invention for eliminating echoes, but the present invention is not limited thereto:

[First Embodiment]

Referring to FIG. 1 and FIG. 2 and FIG. 3, FIG. 2 is a perspective view of the first embodiment of the present invention. FIG. 3 is a partial perspective view of the present embodiment.

This embodiment describes an audio-visual device 100 for eliminating echoes, including a video capture device 1, a video playback device 2, and a transmission cable module 3.

The video capture device 1 is exemplified by the image pickup device having the sound pickup function in the embodiment, and the video playback device 2 is exemplified by the television in the embodiment, but is not limited thereto in practical applications.

The video capture device 1 has a video capture device 11, an audio capture device 12, a signal processing module 13, and an output port 14. The video capture device 11 can be used to capture video data, and the audio capture device 12 can be used to capture audio data.

Furthermore, the video capture device 11 and the audio capture device 12 are electrically connected to the signal processing module 13 , and the signal processing module 13 is electrically connected to the output buffer 14 .

For example, the video capture device 11 can be a Complementary Metal-Oxide-Semiconductor (CMOS), and the audio capture device 12 can be a microphone. (Microphone).

The signal processing module 13 has a digital signal processor (DSP) and an encoder 132 (Codec) electrically connected to each other. The digital processor 131 is electrically connected to the video capture device 11 , and the encoder 132 is electrically connected to the audio capture device 12 , and the digital processor 131 and the encoder 132 are coupled to the output.埠 14.

The output port 14 is an integrated output socket 141 in this embodiment. It should be noted that the manner in which the integrated output socket 141 is coupled to the digital processor 131 and the encoder 132 can be adjusted according to the needs of the designer.

For example, the integrated output socket 141 can be electrically connected only to the digital processor 131; or the integrated output socket 141 can be electrically connected to the digital processor 131 and the encoder 132, respectively.

The video playback device 2 has an image display 21, a sound player 22, and an input port 23. The image display 21 corresponds to a screen of a television, and the sound player 22 corresponds to a speaker of the television, and the image display 21 and the sound player 22 are respectively coupled to the input port 23. The input port 23 is an integrated input socket 231 in this embodiment.

The opposite ends of the transmission cable module 3 are respectively disposed on the output port 14 of the video capture device 1 and the input port 23 of the video playback device 2, thereby transmitting the video and audio capture device 1 and the video playback device 2 Signal transmission between.

The transmission cable module 3 is an integrated transmission cable 31 in this embodiment, and the two ends of the integrated transmission cable 31 are respectively inserted into the whole The combined output socket 141 and the integrated input socket 231.

Further, the integrated transmission cable 31 in this embodiment has an insulating cladding tube 311, two plugs 312, a video line group 313, and an audio line group 314.

The two ends of the insulating cover tube 311 are respectively connected to the two plugs 312, and each of the plugs 312 is provided with a first column terminal 3121 and a second column terminal 3122. That is, the terminals in each plug 312 are arranged in two rows, and the number of terminals in the second column terminal 3122 is greater than the number of terminals in the first column terminal 3121.

The video line group 313 and the audio line group 314 are received in the insulating cover tube 311, and the two ends of the video line group 313 are respectively connected to the first column terminal 3121 of the two plugs 312, and the audio line group 314 is The two ends are respectively connected to the second column terminals 3122 of the two plugs 312.

In more detail, the video line group 313 can be used to transmit video data. Further, the video line group 313 includes a transmission line for transmitting power, a pair of transmission lines for transmitting differential signals, and a Transmission line for grounding.

It should be noted that the transmission line arrangement order of the video line group 313 is preferably arranged in the above manner, but in actual application, the transmission line arrangement of the video line group 313 is not limited thereto.

Furthermore, the audio line set 314 can be used to transmit audio data and is suitable for canceling echo. Further, the audio line set 314 sequentially includes a transmission line for providing a bit clock for the audio data, and a switch line for switching. The left and right channel audio data provides a clock transmission line, a transmission line for grounding, a transmission line for inputting serial audio data, and a transmission line for outputting serial audio data.

It should be noted that the transmission line arrangement order of the audio line group 314 is preferably arranged in the above manner, but in actual application, the transmission line arrangement of the audio line group 314 is not limited thereto. Moreover, the number of transmission lines of the audio line group 314 is greater than the number of transmission lines of the video line group 313 in this embodiment, but is not limited thereto.

Therefore, the integrated transmission cable 31 can be inserted into the integrated output socket 141 and the integrated input socket 231 through the two plugs 312, thereby connecting the video capturing device 1 and the video playback device 2.

In summary, the audio-visual device 100 for eliminating echoes transmits the two sets of data (eg, left and right channels) in a sequence through the audio line set 314 of the integrated transmission cable 31.

Moreover, since the audio line group 314 of the integrated transmission cable 31 separately transmits the data signal and the clock signal, and then divides the stream to separate the near-end audio from the far-end audio, thereby further enhancing the processing action for each stream. (For example, removing the far-end audio from the near-end audio to provide echo cancellation of the near-end audio), thereby achieving the effect of eliminating echo.

For example, if both the A user and the B user are talking with the audio-visual device 100 for canceling the echo in this embodiment, on the A user side, the A user will hear the sound player 22 from being heard. B user sound.

When the A user speaks, the audio capture device 12 on the user A side captures the voice of the A user and the B user voice sent by the voice player 22, and uses the A through the audio line group 314. The voice of the user is separated from the voice of the B user and transmitted to the video playback device 2. After the B user's voice is removed, the user's voice is transmitted to the B user and transmitted through the B user's voice player 22.

At this point, the B user will only hear the sound from the A user, that is, the echo can be effectively eliminated. Vice versa, the A user will only hear the sound from the B user.

In addition, in the embodiment of the audio-visual device 100 for eliminating the echo, the two plugs 312 of the integrated transmission cable 31 are respectively inserted into the integrated output socket 141 and the video playback device 2 of the audio-visual capturing device 1. The integrated input socket 231 is achieved.

However, in an actual application, the integrated transmission cable 31 can also be provided with only one plug 312. As shown in FIG. 4, one end of the integrated transmission cable 31 is directly connected and fixed to the video capturing device 1 (ie, integrated). The transmission cable 31 is connected to the video capture device 1 as a one-piece configuration, and the other end of the integrated transmission cable 31 is provided with a plug 312 for insertion into the integrated input socket 231 of the video playback device 2.

For the same reason, the integrated transmission cable 31 can also be designed as another embodiment (not shown). One end of the integrated transmission cable 31 is directly connected and fixed to the video playback device 2 (ie, integrated). The transmission cable 31 is connected to the video playback device 2 as a one-piece configuration, and the other end of the integrated transmission cable 31 is provided with a plug 312 for insertion into the integrated output socket 141 of the video capture device 1.

[Second embodiment]

Referring to FIG. 1 and FIG. 5, FIG. 6 is a perspective view of the present embodiment. FIG. 5 is a perspective view of the present embodiment. FIG.

This embodiment is similar to the first embodiment, and will not be repeated in the same place, and the difference between the two is mainly as follows: the output of the video and audio capture device 1 is 14 The input port 23 of the dialing device 2 and the transmission cable module 3.

Specifically, the video capture device 1 output 14 of the present embodiment has a video output socket 142 and an audio output socket 143, and the video playback device 2 input port 23 has a video input socket 232 and an audio input socket 233. .

The manner in which the video input socket 232 and the audio input socket 233 are coupled to the digital processor 131 and the encoder 132 can be adjusted according to the needs of the designer.

For example, the video output socket 142 and the audio output socket 143 can be electrically connected to the digital processor 131; or the video output socket 142 is electrically connected to the digital processor 131, and the audio output socket 143 is electrically connected to the encoder. 132.

The transmission cable module 3 has a video transmission cable 32 and an audio transmission cable 33. The two ends of the video transmission cable 32 are respectively inserted into the video output socket 142 and the video input socket 232, and the two ends of the audio transmission cable 33 are respectively inserted into the audio output socket 143 and the audio input socket 233.

Further, the video transmission cable 32 includes an insulating cladding tube 321, a plug 322, and a video line group 323. The two ends of the insulating cover tube 321 are respectively connected to the two plugs 322. The video line group 323 is received in the insulating cover tube 321 and the two ends of the video line group 323 are respectively connected. The respective terminals in the two plugs 322 described above.

It should be noted that the transmission line included in the video line group 323 in this embodiment is the same as the transmission line included in the video line group 313 in the first embodiment, and details are not described herein.

Furthermore, the audio transmission cable 33 includes an insulating cladding tube 331, two plugs 332, and an audio line set 333. The two ends of the insulating cover tube 331 are respectively connected to the two plugs 332. The audio line group 333 is received in the insulating cover tube 331, and the two ends of the audio line group 333 are respectively connected. The terminals in the two plugs 332 described above.

It should be noted that the transmission line included in the audio line group 333 of the embodiment is the same as the transmission line included in the audio line group 314 in the first embodiment, and details are not described herein. Moreover, the number of transmission lines of the audio line group 333 is larger than the number of transmission lines of the video line group 323 in this embodiment, but is not limited thereto.

Therefore, the video transmission cable 32 can be respectively inserted into the video output socket 142 and the video input socket 232 through the two plugs 332, and the audio transmission cable 33 can be respectively inserted into the audio output socket 143 through the two plugs 332 thereof. The audio input socket 233 is connected to the video capture device 1 and the video playback device 2.

In summary, the audio-visual device 100 for canceling echoes transmits the two sets of data (eg, left and right channels) through the audio line group 314 of the audio transmission cable 33 in a sequential manner.

Moreover, since the audio line group 314 of the audio transmission cable 33 separately transmits the data signal and the clock signal, and then divides the stream to separate the near-end audio from the far-end audio, thereby further enhancing the processing action for each stream ( For example, removing the far-end audio from the near-end audio to provide echo cancellation of the near-end audio, thereby achieving the effect of eliminating echo.

In addition, in addition to the implementation of the audio-visual device 100 for eliminating echo, the video transmission cable 32 and the audio transmission cable 33 may each be provided with only one plug 312 in practical applications. As shown in Figure 7, One end of each of the video transmission cable 32 and the audio transmission cable 33 is directly connected and fixed to the video capture device 1 (that is, the video transmission cable 32, the audio transmission cable 33, and the audio and video capture device 1 are configured as a single piece) The other end of each of the video transmission cable 32 and the audio transmission cable 33 is provided with a plug 312 for being respectively inserted into the video input socket 232 and the audio input socket 233 of the video playback device 2.

For the same reason, the video transmission cable 32 and the audio transmission cable 33 can also be designed as a further embodiment (not shown). One end of each of the video transmission cable 32 and the audio transmission cable 33 is directly connected and fixed to the video and audio dial. The device 2 (i.e., the video transmission cable 32, the audio transmission cable 33, and the video playback device 2 are configured as a single piece), and the other ends of the video transmission cable 32 and the audio transmission cable 33 are provided with a plug 312. The integrated output socket 141 is inserted into the video capture device 1.

[The possible effects of this creation]

In summary, the audio-visual equipment provided by the present embodiment for eliminating echoes is provided with an audio line set of the transmission cable module for providing a bit clock for the audio data, a clock for switching the left and right channel audio data, and an input string. Column audio data, and output serial audio data, in order to achieve the effect of eliminating echo.

That is to say, the data signal and the clock signal are separately transmitted through the audio line group, and then the near-end audio is separated from the far-end audio by dividing the stream, thereby removing the far-end audio from the near-end audio to provide near The echo of the audio is removed.

Furthermore, the transmission cable module can be designed as a single integrated transmission cable or a dual transmission cable according to the designer's requirements (ie, as described in the embodiment). Communication cable and audio transmission cable).

Although the embodiments of the present disclosure are as above, they are not intended to limit the creation. Those who have ordinary knowledge in the field of the present invention can make various changes and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application.

100‧‧‧Audio equipment for eliminating echo

1‧‧‧Video capture device

11‧‧‧Video Capturer

12‧‧‧Optical picker

13‧‧‧Signal Processing Module

131‧‧‧Digital Processor

132‧‧‧Encoder

14‧‧‧ Output埠

141‧‧‧Integrated output socket

142‧‧‧Video output socket

143‧‧‧ audio output socket

2‧‧‧Video playback device

21‧‧‧Image display

22‧‧‧Voice player

23‧‧‧ Input埠

231‧‧‧Integrated input socket

232‧‧‧Video input socket

233‧‧‧ audio input socket

3‧‧‧Transmission cable module

31‧‧‧Integrated transmission cable

311‧‧‧Insulated coated tube

312‧‧‧ plug

3121‧‧‧first column terminal

3122‧‧‧Second column terminal

313‧‧‧Video Group

314‧‧‧ audio line group

32‧‧‧Video transmission cable

321‧‧‧Insulated coated tube

322‧‧‧ plug

323‧‧‧Video Group

33‧‧‧Audio transmission cable

331‧‧‧Insulated coated tube

332‧‧‧ plug

333‧‧‧ audio line group

FIG. 1 is a functional block diagram of a video and audio device for creating echo cancellation.

2 is a perspective view of a first embodiment of an audio-visual device for eliminating echo.

FIG. 3 is a partial perspective view of a first embodiment of an audio-visual device for eliminating echo.

FIG. 4 is a perspective view of another embodiment of a first embodiment of an audio-visual device for eliminating echo.

FIG. 5 is a perspective view of a second embodiment of an audio-visual device for eliminating echo.

FIG. 6 is a partial perspective view of a second embodiment of an audio-visual device for eliminating echo.

FIG. 7 is a perspective view of another embodiment of a second embodiment of an audio-visual device for eliminating echo.

100‧‧‧Audio equipment for eliminating echo

1‧‧‧Video capture device

11‧‧‧Video Capturer

12‧‧‧Optical picker

13‧‧‧Signal Processing Module

131‧‧‧Digital Processor

132‧‧‧Encoder

14‧‧‧ Output埠

2‧‧‧Video playback device

21‧‧‧Image display

22‧‧‧Voice player

23‧‧‧ Input埠

3‧‧‧Transmission cable module

Claims (10)

An audio-visual device for eliminating echoes includes: a video capture device having a video capture device for capturing video data, an audio capture device for capturing audio data, and a signal processing module And an output port, the video capture device and the audio capture device are electrically connected to the signal processing module, and the signal processing module is electrically connected to the output port; and a video playback device has a An image display, a sound player, and an input port, wherein the image display and the sound player are respectively coupled to the input port; and a transmission cable module, the opposite ends of which are respectively mounted on the video device An output port of the capture device and an input port of the video playback device, and the transmission cable module has a video line group for transmitting video data and an audio line group for transmitting audio data and adapted to cancel echo; The video line set has a transmission line for transmitting power, a pair of transmission lines for transmitting differential signals, and a transmission line for grounding. The audio line group includes one for providing audio data. Element clock transmission line, with a switch that provides left and right channel audio data transmission line clock, a serial input audio data for a transmission line, and for outputting a serial audio data transmission line. The video processing device of claim 1, wherein the signal processing module has a digital processor and an encoder electrically connected to each other, and the digital processor is electrically connected to the video device. The encoder is electrically connected to the audio capture device, and the digital processor and the encoder are coupled to the output port. The audio-visual device for eliminating echo according to claim 2, wherein the output port has a video output socket and an audio output socket, the input port has a video input socket and an input audio socket, the transmission line The cable module has a video transmission cable and an audio transmission cable, the video transmission cable includes the video cable group, and two ends of the video transmission cable are respectively inserted into the video output socket and the video input socket, and the audio transmission line The cable includes the audio line set, and two ends of the audio transmission cable are respectively inserted into the audio output socket and the audio input socket. The audio-visual device for eliminating echo according to claim 3, wherein the video output socket and the audio output socket are electrically connected to the digital processor. The audio-visual device for canceling echo according to claim 3, wherein the video output socket is electrically connected to the digital processor, and the audio output socket is electrically connected to the encoder. The audio-visual device for eliminating echo according to claim 2, wherein the output port has an integrated output socket, the input port has an integrated input socket, and the transmission cable module has an integrated transmission line. The integrated transmission cable includes the video line group and the audio line group, and two ends of the integrated transmission cable are respectively inserted into the integrated output socket and the integrated input socket. The audio-visual device for eliminating echo according to claim 6, wherein the integrated transmission cable has an insulating cladding tube and two plugs, and the two plugs are respectively connected to opposite ends of the insulating coated tube. Each of the plugs is provided with a first column of terminals and a second column of terminals, and the pair of video wires and the audio line are housed in the insulating and coated tube, and the video line group The two ends are respectively connected to the first column terminals of the two plugs, and the two ends of the audio wire group are respectively connected to the second column terminals of the two plugs, and the two plugs are respectively inserted into the integrated output socket and the integration Input socket. The audio-visual device for eliminating echo according to claim 6, wherein the integrated output socket is electrically connected to the digital processor. The audio-visual device for eliminating echo according to claim 6, wherein the integrated output socket is electrically connected to the digital processor and the encoder, respectively. The audio and video device for canceling echo according to any one of claims 1 to 9, wherein the audio line group further comprises a transmission line for grounding, and the number of transmission lines of the audio line group is greater than the video. The number of transmission lines for the line group.